CN104871596B

CN104871596B - Support multi-access network wireless communication system in selectively the method for processing service flow and support this method equipment

Info

Publication number: CN104871596B
Application number: CN201380067356.0A
Authority: CN
Inventors: 郑圣勋; 李在煜; 李英大
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2012-12-19
Filing date: 2013-12-19
Publication date: 2018-11-13
Anticipated expiration: 2033-12-19
Also published as: CN104871596A; EP2938128A4; WO2014098506A1; WO2014098496A1; KR20150099746A; US20150319670A1; US20150327150A1; KR101726197B1; US9686731B2; US9961610B2; JP6072298B2; JP2016506155A; EP2938128A1

Abstract

Provide it is a kind of support multi-access network wireless communication system in by terminal processes Business Stream method.This approach includes the following steps：Business Stream routing iinformation is received from the first access net；And the online Business Stream of the first access is handled based on the Business Stream routing iinformation.The Business Stream routing iinformation indicates whether at least one unit that described first accesses online Business Stream can be by the second access net processing.It is involved the steps of the step of handling the Business Stream based on the Business Stream routing iinformation：Determine whether the Business Stream can access net processing by described second；And when the Business Stream can be by the second access net processing, the Business Stream is handled by the second access net.

Description

The selectively processing service flow in the wireless communication system for supporting multi-access network Method and the equipment for supporting this method

Technical field

The present invention relates to wireless communications, and more particularly, in the channel radio for supporting communication by multi-access network In letter system selectively the method for processing service flow and support this method equipment.

Background technology

As UMTS (Universal Mobile Telecommunications System, Universal Mobile Telecommunications System) Improved 3GPP (3rd Generation Partnership Project, third generation partner program) LTE (long Term evolution, long term evolution) it has been used as 3GPP versions (release) 8 to be introduced into.3GPP LTE make in the downlink With OFDMA (orthogonal frequency division multiple access, orthogonal frequency division multiple access), and upper SC-FDMA (Single Carrier-frequency division multiple access, single carrier-are used in line link Frequency division multiple access).3GPP LTE use with most four antennas MIMO (multiple input multiple output, Multiple-input and multiple-output).It is begged for recently as 3GPP LTE-A (LTE- is advanced, LTE-Advanced) of the evolution of 3GPP LTE By underway.

Wireless communication system can be supported to provide the terminal with service by multiple access nets.Terminal can be from such as moving nothing The access net based on 3GPP of line communication system receives service, and interoperates in addition, being accessed from such as Worldwide Interoperability for Microwave (Worldwide Interoperability for Microwave Access, WiMAX), WLAN (Wireless Local Area Network, WLAN) etc. access net based on non-3 gpp receive service.

Need effective interaction scheme by the way that the Business Stream of 3GPP access nets is routed to non-3 GPP access network and is located The Business Stream of the 3GPP access nets of non-3 GPP access network is managed to shunt the Business Stream of 3GPP access nets.Phase between access is netted In interaction, it is proposed that consider the scheme of the communication environment of the quality of such as wireless channel, and it is proposed to this end that in access net Between networking involved in 3GPP access net base station scheme.

In addition, because base station is to as access network discovery and selection function (Access Network Discovery and Selection Function, ANDSF) terminal as server provides the information of the detailed routing plan about Business Stream, It is possible that the efficiency of the interaction between netting the access that base station participates in maximizes.It is, therefore, desirable to provide can pass through The method for more efficiently realizing the interaction between access net to improve the efficiency of overall communication system.

Invention content

Technical problem

Selectively processing service flow that the present invention provides a kind of in the wireless communication system for supporting multi-access network Method and a kind of equipment for supporting this method.

Technical solution

In an aspect, a kind of method for processing service flow is provided, multi-access network is being supported by terminal Wireless communication system in execute.It the described method comprises the following steps：Business Stream routing iinformation is received from the first access net (traffic routing information)；And net is accessed to handle described first based on the Business Stream routing iinformation On Business Stream.The Business Stream routing iinformation indicates whether the online at least one Business Stream of first access is allowed to By the Business Stream of the second access net processing, and include following step based on Business Stream described in the Business Stream routing information processing Suddenly：Determine whether the Business Stream can access net processing by described second；And when the Business Stream can be by described The Business Stream is handled by the second access net when the second access net processing.

The Business Stream routing iinformation may include in one or more Business Streams can be by described second The associated radio bearer list of at least one Business Stream of access net processing.

Determine whether the Business Stream can be may comprise steps of by the step of the second access net processing：When The radio bearer associated with the Business Stream is included in the radio bearer list of the Business Stream routing iinformation Determine that the Business Stream can access net processing by described second when middle.

The Business Stream routing iinformation may include in one or more Business Streams can not be by described The associated radio bearer list of at least one Business Stream of two access net processing.

Determine whether the Business Stream can be may comprise steps of by the step of the second access net processing：When The radio bearer associated with the Business Stream is not included the radio bearer row in the Business Stream routing iinformation Determine that the Business Stream can access net processing by described second when in table.

The method can also include the following steps：The second access net information on services is received from the first access net；With And it is handled based on the second access net information on services to determine whether the Business Stream is allowed through the second access net.

The second access net information on services may include identifier list, and the identifier list may include by Allow the identifier at least one second access net for handling the Business Stream.

Determine whether the Business Stream can be may comprise steps of by the step of the second access net processing：Hair Existing second access network entity；And works as the identifier of the second found access network entity and be included in the identifier list When judge the Business Stream be allowed through it is described second access net processing.

The second access net information on services can also include signal quality threshold and load threshold value.

Determine whether the Business Stream can be may comprise steps of by the step of the second access net processing：Hair Existing second access network entity；And works as the identifier of the second found access network entity and be included in the mark It accords in list and the signal quality of second access network entity is higher than the signal quality threshold and described second accesses Load threshold value described in the duty ratio of network entity determines that the Business Stream is allowed through the second access net processing when low.

The method can also include the following steps：When the Business Stream is allowed through the second access net processing It is sent to the first access net for asking the Business Stream of the Business Stream routing iinformation to route letter to the first access net Breath request.

The Business Stream routing iinformation can be described as being sent to the response of the Business Stream routing information request Terminal.

The first access net can be based on third generation partner program (3rd Generation Partnership Project, 3GPP) access net, and it is described second access net can be based on WLAN (Wireless Local Area Network, WLAN) access net.

In another aspect, a kind of wireless device operated in a wireless communication system is provided.The wireless device packet It includes：First RF units, the first RF units send and receive the first access net signal；2nd RF units, the 2nd RF units hair Send and receive the second access net signal；And processor, the processor and the first RF units and the 2nd RF unit work( It can operate in combination.The processor is configured to receive Business Stream routing iinformation from the first access net, and is based on the industry Business stream routing iinformation indicates described first to handle the online Business Stream of first access and the Business Stream routing iinformation Whether the online at least one Business Stream of access is allowed to the Business Stream by the second access net processing, and is based on the industry Business Stream includes the following steps described in business stream routing information processing：Determine whether the Business Stream can access by described second Net processing；And it is accessed described in net processing by described second when the Business Stream can be by the second access net processing Business Stream.

The effect of the present invention

In processing method for service stream according to the embodiment of the present invention, base station is capable of providing the industry of such as radio bearer Routing iinformation is flowed in business and terminal can be based on the Business Stream routing iinformation selectively processing service flow.ANDSF is not installed As the existing 3GPP interaction schemes accessed between net and non-3 GPP access network provider or do not support the ANDSF's Terminal can also be directed to each Business Stream and be accessed described in net or the non-3 GPP access network selectively handle by the 3GPP Business Stream.The Business Stream of the terminal of higher QoS is needed to access net to handle, without higher QoS by the 3GPP Business Stream enable to ensure the QoS of user by being routed to the non-3 GPP access network and efficiently control described 3GPP accesses the load of net to handle.

Description of the drawings

Fig. 1, which is instantiated, is suitable for the invention wireless communication system.

Fig. 2 is radio protocol architecture (the radio protocol instantiated for user plane (user plane) Architecture block diagram).

Fig. 3 is the block diagram for instantiating the radio protocol architecture for control plane (control plane).

Fig. 4 is the flow chart for the operation for instantiating the UE in RRC idle states.

Fig. 5 is the flow chart for instantiating the process for establishing RRC connections.

Fig. 6 is the flow chart for instantiating RRC connection reconfiguration procedure.

Fig. 7 is the flow chart for instantiating handoff procedure.

Fig. 8 is the flow chart for instantiating RRC connection reconfiguration procedure.

Fig. 9 is the exemplary figure for instantiating the environment that 3GPP access nets and WLAN access nets coexist.

Figure 10 is the exemplary figure for instantiating the method for processing service flow according to the embodiment of the present invention.

Figure 11 is the exemplary figure for instantiating the method for processing service flow according to the embodiment of the present invention.

Figure 12 is another exemplary figure for instantiating the method for processing service flow according to the embodiment of the present invention.

Figure 13 is the block diagram for instantiating the wireless device that embodiments of the present invention wherein may be implemented.

Specific implementation mode

Fig. 1, which is instantiated, is suitable for the invention wireless communication system.The wireless communication system can be referred to as evolved UMTS Terrestrial radio access network (Evolved-UMTS Terrestrial Radio Access Network, E-UTRAN) is long Phase evolution (Long Term Evolution, LTE)/lte-a system.

E-UTRAN includes providing control plane (control plane) to user equipment (User Equipment, UE) 10 With the base station (Base Station, BS) 20 of user plane (user plane).UE 10 can be fixed or with movement Property, and such as movement station (Mobile station, MS), user terminal (User Terminal, UT) can be referred to as, ordered Family station (Subscriber Station, SS), mobile terminal (mobile terminal, MT) and wireless device (Wireless Device other terms).BS 20 usually indicates the fixed station communicated with UE 10, and can be referred to as such as evolution It type NodeB (evolved-NodeB, eNB), base-station transceiver system (Base Transceiver System, BTS) and connects Other terms of access point (Access Point).

BS 20 can be connected to each other by X2 interface.BS 20 is connected by S1 interfaces and Evolved Packet Core (EPC) 30 It connects, and more specifically, being connect with mobility management entity (MME) by S1-MME and by S1-U and gateway (S- GW it) connects.

EPC 30 is by MME, S-GW and grouped data network gateway (Packet Data Network-Gateway, P-GW) It constitutes.MME has the information of the access information of UE or the capacity in relation to UE, and the information is frequently used in the mobility pipe of UE In reason.S-GW is the gateway for having E-UTRAN as endpoint, and P-GW is the gateway for having PDN as endpoint.

Based on widely known in a communications system open system interconnection (Open System Interconnection, OSI) three low layers of master pattern can be by Radio interface protocols (the Radio Interface between UE and network Protocol layer) is divided into first layer L1, second layer L2 and third layer L3, and in them, belonging to first layer Physical layer provides information transmission service (Information Transfer using physical channel (Physical Channel) Service), and the wireless heterogeneous networks in third layer (Radio Resource Control, RRC) layer is located in for controlling Radio resource between UE and network processed.For this purpose, rrc layer exchanges RRC information between UE and network.

Fig. 2 is the block diagram for instantiating the radio protocol architecture for user plane (user plane).Fig. 3 is to instantiate needle To the block diagram of the radio protocol architecture (radio protocol architecture) of control plane.User plane is for using The protocol stack of user data transmission, and control plane is the protocol stack (protocol stack) for control signal transmission.

With reference to Fig. 2 and Fig. 3, physics (physical, PHY) layer is come by using physical channel (physical channel) Information transmission (information transfer service) service is provided to upper layer.PHY layer is by transmission channel and is used as M AC (Medium Access Control, the MAC) layer on upper layer connects.Data pass through transmission channel (transport channel) is moved between MAC layer and PHY layer.Transmission channel is according to how by with any characteristic Wireless interface transmission data classify.

Data are moved by physical channel between different PHY layers (that is, PHY layer of transmitters and receivers).Physics Channel can pass through orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) scheme It modulates, and usage time and frequency be as radio resource.

The function of MAC layer includes mapping between logic channel and transmission channel and in the MAC for belonging to logic channel The transmission block of physical channel is supplied on the transmission channel of service data unit (service data unit, SDU) The multiplexing of (transport block) and demultiplexing.MAC layer is by logic channel come to wireless spread-spectrum technology (Radio Link Control, RLC) layer offer service.

The function of rlc layer includes the cascade (concatenation), segmentation (segmentation) and recombination of RLC SDU (reassembly).In order to ensure various service quality (the Quality of needed by radio bearer (Radio Bearer, RB) Service, QoS), rlc layer provides transparent mode (Transparent Mode, TM), Unacknowledged Mode (Unacknowledged Mode, UM) and affirmation mode (acknowledged Mode, AM) these three operation modes.AM RLC pass through automatic repeat request (automatic repeat request, ARQ) provides error correction.

Wireless heterogeneous networks (Radio Resource Control, RRC) layer is merely defined in control plane.Rrc layer Configuration (configuration) with RB reconfigures (re-configuration) and release (release) is related to be used for Control logic channel, transmission channel and physical channel.RB indicate by first layer (PHY layer) and the second layer (MAC layer, rlc layer or PDCP layers) it provides to transmit the logical path of data between UE and network.

Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) layer in user plane Function include the transmission of user data, header-compressed (header compression) and encryption (ciphering).Control is flat The function of Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) layer in face includes control The transmission of panel data and encryption/integrity protection (integrity protection).

The configuration of RB indicates to define the characteristic of radio protocol layer and channel to provide special services and configure each detailed The process of parameter and operating method.Can RB be divided into signaling RB (Signaling RB, SRB) and data RB (Data again RB, DRB).SRB is used as the path for sending RRC information in the control plane, and DRB is used as in user plane The path of middle transmission user data.

When establishing RRC connections (RRC Connection) between the rrc layer of UE and the rrc layer of E-UTRAN, at UE In RRC connections (RRC connected) state, and if it is not, then UE is in idle (RRC idle) states of RRC.

For including being used for transmission the broadcast letter of system information from network to the downlink transmission channel of UE transmission datas Road (Broadcast Channel, BCH) and the downlink sharied signal channel for being used for transmission user traffic flow or control message (Shared Channel, SCH).The Business Stream or control message of downlink multicast or broadcast service can pass through downlink SCH is transmitted, or can be transmitted by individual downlink Multicast Channel (Multicast Channel, MCH).This Outside, for from UE to the uplink transmission channels of transmitted data on network include the random access for being used for transmission initial control message Channel (Random Access Channel, RACH) and user traffic flow or control message are used for transmission in addition to RACH Uplink shared channel (Shared Channel, SCH).

The logic channel (Logical Channel) mapped on transmission channel and in transmission channel includes broadcast Control channel (Broadcast Control Channel, BCCH), Paging Control Channel (Paging Control Channel, PCCH), common control channel (Common Control Channel, CCCH), multicast control channel (Multicast Control Channel, MCCH) and group business stream channel (Multicast Traffic Channel, MTCH) etc..

Physical channel (Physical Channel) is by several subcarriers in the several OFDM symbols and frequency domain in time domain (Sub-carrier) it constitutes.One subframe (Sub-frame) is made of multiple OFDM symbols (Symbol) in time domain.As The RB of resource allocation unit is made of multiple OFDM symbols and multiple subcarriers (sub-carrier).In addition, each subframe can be with For physical downlink control channel (Physical Downlink Control Channel, PDCCH) (that is, L1/L2 is controlled Channel processed) use the specific subcarrier for the specific OFDM symbol (for example, first OFDM symbol) for corresponding to subframe.Transmission time interval (Transmission Time Interval, TTI) is the unit interval that subframe is sent.

As disclosed in 3GPP TS 36.211V8.7.0, the physical channel in 3GPP LTE can be divided into conduct The physical down link sharing channel (Physical Downlink Shared Channel, PDSCH) and physics of data channel Uplink shared channel (Physical Uplink Shared Channel, PUSCH), and as the physics of control channel Downlink control channel (Physical Downlink Control Channel, PDCCH), physical control format indicator Channel (Physical Control Format Indicator Channel, PCFICH), physical mixed-ARQ indicator channels (Physical Hybrid-ARQ Indicator Channel, PHICH) and physical uplink control channel (Physical Uplink Control Channel, PUCCH).

The PCFICH transmission sent in the first OFDM symbol of subframe is related for the transmission control channel in subframe The quantity (that is, size of control area) of OFDM symbol control format indicator (control format indicator, CFI).Terminal receives CFI on PCFICH first, and hereafter, monitors PDCCH.

PDCCH as downlink control channel in terms of transmitting scheduling information is also known as scheduling channel.Pass through The control information that PDCCH is sent is referred to as down link control information (downlink control information, DCI). DCI may include the resource allocation (being also known as downlink (DL) allows (downlink grant)) of PDSCH, PUSCH Resource allocation (be also known as uplink (UL) allow (uplink grant)), for one group of the independent UE in predetermined UE groups The activation of transmission power control command and/or voice-over-IP telephone (Voice over Internet Protocol, VoIP).

In 3GPP LTE, blind decoding is used in order to detect PDCCH terminals.Blind decoding is by by desired identifier solution Shelter the PDCCH (be referred to as PDCCH candidate (candidate)) received CRC (Cyclic Redundancy Check, Cyclic redundancy check) carry out check (CRC) mistake with verify corresponding PDCCH whether be its control channel scheme.

Base station determines PDCCH formats according to the DCI of terminal to be sent to and then adds cyclic redundancy check (CRC) It is added to DCI, and unique identifier (is referred to as by radio network temporary identifier according to the owner (owner) of PDCCH or use Accord with (Radio Network Temporary Identifier, RNTI)) it shelters and arrives CRC.

Hereinafter, RRC state and the RRC connection methods of UE will be described.

RRC state indicate UE rrc layer whether the rrc layer logical connection (logical connection) with E-UTRAN, And the case where rrc layer of the rrc layer of UE and E-UTRAN connect is referred to as RRC connection status, and the rrc layer of UE not with E- The case where rrc layer connection of UTRAN, is referred to as RRC idle states.Because RRC connections are present in the UE in RRC connection status In, so E-UTRAN can determine that corresponding UE is present in cell unit, and as a result, it can efficiently control UE.Another party Face, the UE in RRC idle states may not determine by E-UTRAN, and core net (core network, CN) by as than Tracing area (Tracking Area) unit of the territory element of cell bigger manages.That is, in the RRC free time In the UE of state, there is only being determined by big territory element, and UE needs to move to receive such as voice under RRC connection status Or the general mobile communication service of data.

When user connects the power supply of UE first, UE searches for cell appropriate and is then stayed in respective cell first Under RRC idle states.UE in RRC idle states only passes through RRC connection procedures (RRC when RRC connections are needed Connection procedure) it establishes RRC with E-UTRAN and connect, and it is transformed into RRC connection status.In the presence of in RRC The UE of idle state needs several situations of RRC connections, and for example, is needed due to the call attempt of such as user The response message for the case where uplink data is sent, or transmission from E-UTRAN to receiving paging message.

It is located in Non-Access Stratum (Non-Access Stratum, NAS) layer on rrc layer and executes such as session management The function of (Session Management) and mobile management (Mobility Management).

In NAS layers, in order to manage the mobility of UE, EDEPS mobile management registration (EPS Mobility are defined Management-REGISTERED, EMM-REGISTERD) and EMM solution registration EMM-DEREGISTERED two states, and And two states are applied to UE and MME.Initial UE is in EMM-DEREGISTERED states, and UE is executed by initially adhering to (Initial Attach) process registers UE to be connected to the process of network in corresponding network.When successfully performing attachment (Attach) when process, UE and MME are in EMM-REGISTERED states.In order to manage the signaling connection between UE and EPS (signaling connection), EPS Connection Management (EPS Connection Management, ECM)-IDLE (free time) Two states of state and ECM-CONNECTED (connection) state, and the two states are applied to UE and MME.When in When UE and the E-UTRAN RRC of ECM-IDLE states are connect, corresponding UE is the result is that be in ECM-CONNECTED states.When in When MME and the E-UTRAN S1 of ECM-IDLE states connect (S1connection), corresponding MME is the result is that be in ECM- CONNECTED states.When UE is in ECM-IDLE states, E-UTRAN does not have context (context) information of UE.Cause This, the UE in ECM-IDLE states is without executing such as cell selection (cell in the case of receiving the order of network ) or the process related with the mobility based on UE of cell reselection (reselection) selection.On the contrary, when UE is in When ECM-CONNECTED states, the mobility of UE is managed by the order of network.As the UE in ECM-IDLE states Position with for position difference known to network when, UE by tracking area update (Tracking Area Update) process come To the corresponding position of network advertisement UE.

Next, will description system information (System Information).

System information includes that UE needs are known to be connected to the necessary information of BS.Therefore, UE needs before being connected to BS All system informations are received, and in addition, need that there is newest system information always.In addition, because system information is will be by The information that all UE in one cell know, so BS periodically sends system information.System information is divided into main letter Cease block (Master Information Block, MIB) and multiple system information blocks (System Information Block, SIB)。

MIB may include the parameter that obtain required limited quantity for other parameters from cell, be most necessary And it is most frequently sent.User equipment first looks for MIB after the downlink is synchronized.MIB may include under including Letter that is synchronous and being configured as SFN the and eNB transmission antennas of timing base is supported in Downlink channels bandwidth, PHICH configurations Breath.BCH broadcast transmissions MIB can be passed through.

System information block type 1 (SystemInformationBlockType1, SIB1) in included SIB It is sent while in the message for being included in " SystemInformationBlockType1 ", and in addition to SIB1 SIB is sent while being included in system information.The information list parameter to being included in SIB1 can be passed through It is scheduled and SIB is mapped to system information to be configured flexibly.However, it is possible to include in individual system by each SIB The SIB of scheduling requirement value (for example, period) having the same in informational message and can be only mapped to identical system letter Cease message.In addition, system information block type 2 (SystemInformationBlockType2, SIB2) be mapped to The corresponding system information of first entry in the system information list of scheduling information list.It can be in same period Send multiple system informations.SIB1 and all information system informational messages are sent by DL-SCH.

Can also include the parameter for being similar to the value set in the prior art in E-UTRAN in addition to broadcast transmission While exclusively signal (dedicated signaling) SIB1, and in this case, SIB1 can be in quilt It is included in while RRC connections reconfigure in message and is sent.

SIB1 includes the scheduling for accessing associated information with user's cell and defining other SIB.SIB1 may include PLMN identifiers, tracing area code (Tracking Area Code, TAC) and the cell ID of network, indicating cell whether be The cell bar status (cell barring status) for the cell that can be resident is used as in the cell of cell reselection benchmark Required minimum receiving level and information associated with the sending time of other SIB and period.

SIB2 may include for radio-resource-configuration (paging configuration) information common to all terminals. SIB2 may include and uplink carrier frequency and uplink channel bandwidth, RACH configurations, paging configuration, uplink work( Rate control configuration, value detects reference signal configuration (ounding Reference Signal configuration) and support The PUCCH configurations and PUSCH that ACK/NACK is sent configure associated information.

Terminal can be only to PCell application system information acquisition and change sensing process.In Scell, E-UTRAN can All system informations associated with the operation of RRC connection status are provided by dedicated signaling when being added to corresponding SCell. When the associated system informations of the SCell for changing with being configured, E-UTRAN can discharge (release) and add later The SCell considered, and message can be reconfigured together with single RRC connections and execute release and addition.E-UTRAN can To configure the parameter value in addition to the value broadcasted in the SCell considered by dedicated signaling.

Terminal needs to ensure the validity of specific type system information and system information is referred to as required system information (required system information).It is as follows that required system information can be defined.

In the case where terminal is in RRC idle states：It needs to ensure that terminal has MIB and SIB1 and SIB2 extremely Effective version of SIB8 and its then can be support consider RAT.

In the case where terminal is in RRC connection status：It needs to ensure effective version that terminal has MIB, SIB1 and SIB2 This.

In general, can ensure the validity of system information within most 3 hours after needing system information.

In general, the service of UE can will be supplied to be divided into be described below three types by network.In addition, UE Cell type is differently identified according to which service can be provided.First, service type is will be described below, and then Cell type will be described.

1) limited service (Limited service)：The service provides urgent call (Emergency call) and earthquake With tsunami warning system (Earthquake and Tsunami Warning System, ETWS), and appearance can be arranged on Perhaps in cell (acceptable cell).

2) normal service (Normal service)：The service indicate generally to use it is public use, and can be set It sets in suitable cell or normal cell.

3) carrier service (Operator service)：The service indicates the service for communication network operator, and And cell only can be used and may not be used by general user by communication network operator.

It, can division of cells below type about the service type provided by cell.

1) allow cell (Acceptable cell)：Wherein UE can receive the cell of limited (Limited) service.It should Cell is the cell for the cell selection benchmark for not being prohibited (barred) and meeting UE in corresponding UE.

2) suitable cell (Suitable cell)：Wherein UE can receive the cell of normal service.Cell satisfaction is allowed The condition of cell is and at the same time meet additional conditions.As additional conditions, which needs to belong to what corresponding UE can be connected to Public-land mobile network (Public Land Mobile Network, PLMN) and be the wherein tracing area of UE The not forbidden cell of execution of (Tracking Area) renewal process.When respective cell is CSG cell, UE needs to want The cell of respective cell is connected to as CSG member.

3) it is prohibited cell (Barred cell)：The cell is the broadcast message in the cell forbidden by system information Cell.

4) retain cell (Reserved cell)：The cell is the broadcast message in the cell retained by system information Cell.

Fig. 4 is the flow chart for the operation for instantiating the UE in RRC idle states.Fig. 4 is instantiated to be selected by cell Journey registers the UE for wherein having connected primary power and the when necessary process of re-selecting cell in a network.

With reference to Fig. 4, UE select for the public-land mobile network (public as the network for receiving service Land mobile network, PLMN) wireless access technology (radio access technology, RAT) that is communicated (S410).Information about PLMN and RAT can be selected by the user of UE, and be stored in Universal Subscriber Identity mould to be used In block (universal subscriber identity module, USIM).

The UE surveys of selection with maximum value in the cell that the signal strength and quality measured from BS is more than predetermined value Measure BS and cell (cell selection) (S420).This be by have been turned on UE execute cell selection (Cell Selection) and It can be referred to as initial cell and select (initial cell selection).It will be described below cell selection procedure.Small After area's selection, UE receives the system information that BS is periodically sent.The expression of aforementioned predetermined value define in systems for The value of quality is ensured in data transmission/reception for physical signal.Therefore, which can change according to the RAT applied.

UE executes network registration process (S430) in the case where needing network registry.UE registrations self information (for example, IMSI) to receive service (for example, paging (Paging)) from network.UE need not be registered in whenever selecting cell and have connected net In network, but from System Information reception to the information about network (for example, tracing area identity (Tracking Area Identity, TAI)) and for the information about network known to UE in the case of be registered in a network.

UE executes cell reselection (S440) based on service environment, UE environment provided by cell etc..It is taken when from reception The intensity for the signal that the BS of business is measured or the value of quality be from the value that the BS of neighboring community is measured when, UE selection provide compares UE One in other cells of the better characteristics of signals of cell for the BS being connected to.This process and wait for the of referred to as cell reselection The initial cell selection (Initial Cell Selection) of two processes distinguishes.In this case, cell in order to prevent According to the change in characteristics of signals by continually gravity treatment, existence time constraint.It will be described below cell reselection (Cell Re- Selection) process.

RRC connection request (the RRC Connection Request) message of UE to network transmission requests RRC connections (S510).Network, which transmits RRC connections in response to RRC connection request, establishes (RRC Connection Setup) message (S520).After an rrc connection setup message is received, UE enters RRC connection modes.

UE is used to verify the RRC connections successfully completed that RRC connections are established to network transmission and establishes completion (RRC Connection Setup Complete) message (S530).

Fig. 6 is the flow chart for instantiating RRC connections and reconfiguring (reconfiguration) process.RRC connections are matched again It sets and be used to change RRC connections.RRC connections reconfigure be used for RB foundation/modification/release, switching execute and measure establish/ Change (modify)/release (release).

Network transmits to UE and reconfigures (RRC Connection for changing the RRC connections of RRC connections Reconfiguration) message (S610).UE is used to verify the RRC successfully completed that RRC connections reconfigure to network transmission Connection reconfigures completion (Connection Reconfiguration Complete) message and is used as matches RRC connections again The response (S620) set.

Hereinafter, by description public-land mobile network (public land mobile network, PLMN).

PLMN is the network arranged and operated by Mobile Network Operator.Each Mobile Network Operator operates one or more Multiple PLMN.Each PLMN can be identified as to mobile country code (Mobile Country Code, MCC) and mobile network Code (Mobile Network Code, MNC).The PLMN information of cell is included in the system information to be broadcasted.

In PLMN selections, cell selection and cell reselection, various types of PLMN can be considered by UE.

Home PLMN ((Home PLMN, HPLMN)：With MCC and with the MNC's of the matched MNC and UE IMSI of MCC PLMN。

Equivalent HPLMN (Equivalent HPLMN, EHPLMN)：It is treated as being equivalent to the PLMN of HPLMN.

Register PLMN (Registered PLMN, RPLMN)：The PLMN that wherein location registration successfully completes.

Equivalent PLMN (Equivalent PLMN, EPLMN)：It is treated as being equivalent to the PLMN of RPLMN.

Each Information Mobile Service consumer is customized in HPLMN.When general service is supplied to UE by HPLMN or EHPLMN When, UE is not at roaming state (roaming state).On the other hand, when service is by addition to HPLMN/EHPLMN PLMN is come when being supplied to UE, UE is in roaming state, and PLMN is referred to as visited PLMN (Visited PLMN, VPLMN).

When having connected power supply in the starting stage, UE searches for available public-land mobile network (public land Mobile network, PLMN) and select that the suitable PLMN of service can be received.PLMN is by Mobile Network Operator (mobile network operator) disposes the network of (deploy) and operation.Each Mobile Network Operator operation one A or more PLMN.Each PLMN can be by mobile country code (mobile country code, MCC) and mobile network Code (mobile network code, MNC) identifies.The PLMN information of cell is included in the system information to be broadcasted.UE Attempt to register selected PLMN.When register complete when, selected PLMN become registration PLMN (registered PLMN, RPLMN).PLMN lists can be signaled to UE by network, and the PLMN being included in PLMN lists may be considered that It is the PLMN of such as RPLMN.The UE needs registered in a network can be touched (reachable) always by network.If UE is in ECM-CONNECTED states (similarly, RRC connection status), then Network Recognition UE, which is received, services.However, when UE is in ECM- When IDLE state (similarly, RRC idle states), the situation of UE is invalid in the enb, but is stored in MME.In this feelings Under condition, UE is in the position of ECM-IDLE states by the granularity of the list with tracing area (tracking Area, TA) (granularity) notice gives only MME.Single TA by by belonging to TA PLMN identity and uniquely express TA in the plmn Tracing area code (tracking area code, TAC) constitute tracing area identity (tracking area Identity, TAI) mark.

Next, in the cell provided by selected PLMN, UE selections have the letter that can be received and be suitble to service The cell of number quality and characteristic.

Next, will be described in detail the process for selecting cell by UE.

When power supply is switched on or UE is stayed in the cell, UE is executed for by selecting/reselecting with appropriate quality Cell receive the process of service.

UE in RRC idle states selects the cell with appropriate quality and needs to be ready to pass through selected always Cell services to receive.For example, the UE for having only turned on power supply needs to select the cell with appropriate quality for being registered to net Network.When the UE in RRC connection status enters RRC idle states, UE needs to select to stay in the cell under RRC idle states. Therefore, selection meets the process quilt of the cell under the service stand-by state that any condition makes UE stay in such as RRC idle states Referred to as cell selects.Because executing cell choosing in the state that current uncertain wherein UE stays in the cell under RRC idle states It selects, so more importantly selecting cell as rapidly as possible.Therefore, as long as cell is to provide the wireless communication of predeterminated level or more The cell of number quality can also select even if the cell is not to provide the cell of optimum signal quality to UE in the cell of UE The cell is selected in journey.

Hereinafter, with reference to 3GPP TS 36.304V8.5.0 (2009-03) " user equipment (UE) at the idling mode Process (version 8) (User Equipment (UE) procedures in idle mode (Release 8)) ", will retouch in detail State the method and process that cell is selected by UE in 3GPP LTE.

Cell selection procedure is mainly divided into two processes.

First, as initial cell selection course, UE is not in this process about the previous message of wireless channel.Cause This, UE searches for all wireless channels to search suitable cell.UE searches strongest cell in each channel.Hereafter, when UE It finds and meets when being suitble to (suitable) cell of cell selection benchmark, the corresponding cell of UE selections.

Next, UE can select cell by using the information stored or using the information broadcasted in cell. Therefore, cell selection can be promptly executed compared with the selection course of initial cell.UE only find meet cell select benchmark Cell when the corresponding cell of selection.If UE does not find the suitable cell for meeting cell selection benchmark by the process, Then UE executes initial cell selection course.

Cell selection criterion can be defined as shown in the formula 1 being provided below.

Srxlev > 0 and Squal > 0

Wherein：

Srxlev=Q_rxlevmeas-(Q_rxlevmin+Q_{rxlevminoffset})-Pcompensation

Squal=Q_qualmeas-(Q_qualmin+Q_{quolminoffset})

Herein, can as shown in the table 1 being provided below definition 1 each variable.

[table 1]

It can be only directed to more using as while terminal resides on normal cell when assessing cell and selecting The result of the PLMN of high priority periodically searched for is the Q of the value signaled_{rxlevminoffset}And Q_{qualminoffset}.In needle To during the periodical search with higher priority, terminal can be by using from the another of the PLMN with higher priority The parameter value of cell storage is assessed to execute cell selection.

It, can be according in the mobility of UE, wireless environment after UE has selected any cell by cell selection procedure Change etc. change the intensity or quality of the signal between UE and BS.Therefore, when the quality of selected cell deteriorates, UE Another cell of offer better quality can be provided.Therefore, in the case where selecting cell again, in general, UE selections are than current The cell of selection provides the cell of better signal quality.This process is referred to as cell reselection (Cell Reselection). Cell reselection process usually has the main purpose for the cell that select to provide best in quality to UE in terms of the quality of wireless signal.

In addition to the quality of wireless signal, network is that each frequency determines priority with identified preferential to UE notices Grade.When UE receives priority, consider that this is preferential first when comparing radio signal quality benchmark in cell reselection process Grade.

Accordingly, there exist being selected according to the characteristics of signals in wireless environment or the method for re-selecting cell, and in cell weight During choosing for gravity treatment select cell in the case of, it is understood that there may be according to the RAT of cell and following frequencies (frequency) characteristic come The method of re-selecting cell.

(Intra-frequency) cell reselection in frequency：UE gravity treatments have during resident RAT identical with cell and The cell of identical centre frequency.

(Inter-frequency) cell reselection between frequency：UE gravity treatments have during resident RAT identical with cell and The cell of different centre frequencies.

(Inter-RAT) cell reselection between-RAT：UE comes re-selecting cell using different from RAT RAT during resident.

The principle of cell reselection process is as follows.

First, UE measures the quality of the quality and neighboring community of serving cell (serving cell) for cell reselection.

Secondly, cell reselection is executed based on cell reselection benchmark.Cell reselection benchmark has and serving cell and neighboring community The associated following characteristic of measurement result.

Cell reselection is substantially based on ranking (ranking) in frequency.Ranking is the index defined for assessing cell reselection It is worth and is carried out to cell by the sequence of the size of index value by using these index values the operation of ranking.Last optimal index The cell of value is commonly referred to as best rank cell (highest ranked cell).Cell index value be based on by UE relative to Respective cell and the value measured, and be the value of applying frequency offset when necessary or cell offset.

Inter-frequency cell gravity treatment is based on the frequency priority provided by network.UE attempts to be resident (camp on) with highest In the frequency of frequency priority.Network can want commonly used by broadcast signaling (broadcast signaling) to provide The frequency priority of UE in cell or by the dedicated signaling (dedicated signaling) for each UE come needle To each UE priority is provided for each frequency.The cell reselection priority provided by broadcast signaling can be referred to as public excellent First grade (common priority), and by network for each UE setting cell reselection priority can be referred to as it is special excellent First grade (dedicated priority).When UE receives dedicated priority, UE can be received together to be had with dedicated priority The validity time of pass.When UE receives dedicated priority, UE starts the validity time for being set as receiving together The validity timer of (validity time).UE is applied special in the rrc-idle mode while validity timer operation Use priority.At the end of validity timer (validity timer), UE abandons dedicated priority and applies public affairs again Priority altogether.

For inter-frequency cell gravity treatment, network can be directed to each frequency and provide the parameter used in cell reselection to UE (for example, frequency particular offset (frequency-specific offset)).

For cell reselection in frequency or inter-frequency cell gravity treatment, network can use adjacent small into UE offer cell reselections Area's list (Neighboring Cell List, NCL).NCL be included in used in cell reselection cell-specific parameters (for example, Cell specific offset).

For cell reselection in frequency or inter-frequency cell gravity treatment, network can provide the cell used in cell reselection to UE Gravity treatment blacklist (black list).UE does not execute cell reselection to the cell being included in blacklist.

Next, the ranking that description is executed during cell reselection evaluation.

Ranking criterion (ranking criterion) for providing the priority of cell is defined by formula 2.

R_S=Q_{Meas, s}+Q_hyst, R_n=Q_{Meas, n}-Q_offset

Here, R_sIndicate the ranking criterion of serving cell, R_nIndicate the ranking criterion of neighboring community, Q_meas,sIt indicates by UE phases For the mass value that serving cell measures, Q_meas,nIndicate by UE relative to neighbor cell measurement to mass value, Q_hystIt indicates Lag (hysteresis) value and Q for ranking_offsetIndicate the offset between two cells.

In in frequency, when UE receives the offset Q between serving cell and neighboring community_offsets,nWhen, Q_offset= Q_offsets,n, and when UE does not receive Q_offsets,nWhen, Q_offset=0.

In between frequency, when UE receives the offset Q of respective cell_offsets,nWhen, Q_offset=Q_offsets,n+Q_frequency, and When UE does not receive Q_offsets,nWhen, Q_offset=Q_frequency。

As the ranking criterion R for changing serving cell under similar state_sWith the ranking criterion R of neighboring community_nWhen, as Change result rank order continually to be overturned, and as a result, UE can alternately two cells of gravity treatment.Q_hystIt is for passing through Lag is provided in terms of cell reselection to prevent the parameter of UE alternately two cells of gravity treatment.

UE measures the R of serving cell according to formula 1_sWith the R of neighboring community_n, the cell with top ranked criterion value is considered as The cell of best rank (highest ranked), and select the cell.

According to benchmark, it can be seen that the quality of cell is as the most important benchmark in cell reselection.When the cell of institute's gravity treatment When not being suitable cell (suitable cell), corresponding frequency or corresponding small is discharged in UE from cell re-selection target Area.

When terminal executes cell reselection according to cell reselection evaluation, terminal can meet cell reselection criterion up to specific Judgement meets cell reselection criterion and cell is moved to selected Target cell when the time.Herein, specific time It can be provided from network as pre-selection parameter.Pre-selection with designated area reselection timer value and can be relative to E- Each frequency of UTRAN and another RAT are defined.

Hereinafter, description is carried out to the cell reselection information of cell reselection by terminal use.

Cell reselection information can be included in the format of cell reselection parameters from the system information of Web broadcast While sent and be supplied to terminal.It may include with Types Below to be supplied to the cell reselection parameters of terminal.

Cell reselection priority (cellReselectionPriority)：CellReselectionPriority parameters refer to Determine the frequency of E-UTRAN, the frequency of UTRAN, one group of GERAN frequency, the band class of CMDA2000HRPD or CDAM20001xRTT Band class priority.

Qoffset_s,n：Specify the deviant between two cells.

Qoffset_frequency：The specified frequency particular offset for the E-UTRAM with equal priority.

Q_hyst：The specified lagged value for order index.

Q_qualmin：It specifies quality level needed for minimum and is specified as unit of dB.

Q_rxlevmin：It specifies Rx level needed for minimum and is specified as unit of dB.

Treselection_EUTRA：It specifies the cell reselection timer value for E-UTRAN and can be relative to E- Each frequency of UTRAN configures.

Treselection_UTRAN：The specified cell reselection timer value for UTRAN.

Treselection_GERA：The specified cell reselection timer value for GERAN.

Treselection_{CDMA_HRPD}：The specified cell reselection timer value for CDMA HRPD.

Treselection_{CDMA_1xRTT}：The specified cell reselection timer value for CDMA 1xRTT.

Thresh_x,HighP：When to the gravity treatments of the RAT/ frequencies with priority more higher than service frequency as unit of dB When specified, the Srxlev threshold values that are used by terminal.It can be relative to the frequency of E-UTRAN and UTRAN, every group of GERAN frequency, each Specific threshold is individually arranged in a band class and each band class of CDMA20001Xrtt.

Thresh_x,HighQ：When to the gravity treatments of the RAT/ frequencies with priority more higher than service frequency as unit of dB The Squal threshold values used by terminal when specified.It can be individually arranged relative to each frequency of E-UTRAN and UTRAN FDD Specific threshold.

Thresh_x,LowP：Referred to as unit of dB when to the gravity treatment of the RAT/ frequencies with priority more lower than service frequency The Srxlev threshold values that timing is used by terminal.It can be relative to the frequency of E-UTRAN and UTRAN, every group of GERAN frequency, each Specific threshold is individually arranged in band class and each band class of CDMA20001Xrtt.

Thresh_x,LowQ：Referred to as unit of dB when to the gravity treatment of the RAT/ frequencies with priority more lower than service frequency The Squal threshold values that timing is used by terminal.It can be individually arranged relative to each frequency of E-TRAN and UTRAN FDD specific Threshold value.

Thresh_Serving,LowP：When being specified as unit of dB to the gravity treatment of relatively low RAT/ frequencies by terminal in serving cell On the Srxlev threshold values that use.

Thresh_Serving,LowQ：When being specified as unit of dB to the gravity treatment of relatively low RAT/ frequencies by terminal in serving cell On the Squal threshold values that use.

S_IntraSerachP：Srxlev threshold values for intra-frequency measurement are specified as unit of dB.

S_IntraSerachQ：Squal threshold values for intra-frequency measurement are specified as unit of dB.

S_{nonIntraSerachP}：Srxlev threshold values for being measured between RAT in E-UTRAN frequencies are specified as unit of dB.

S_{nonIntraSerachQ}：Squal threshold values for being measured between RAT in E-UTRAN frequencies are specified as unit of dB.

Furthermore, it is possible to scale cell reselection parameters above-mentioned according to the mobility of terminal.It can be based on when terminal is specific Number when during time interval by cell reselection and/or switching mobile come estimate terminal mobility and this be referred to as moving Dynamic property state estimation (Mobility State Estimation, MSE).The mobility of terminal can be estimated as just according to MSE Normal mobility status (normal mobility state), medium mobility state (medium mobility state) and height One in mobility status (high mobility state).

The parameter of the benchmark for the mobile status for being used as estimating in MSE terminal can be provided.T_CRmaxIt is specified Specified time interval for being counted to the mobile execution of another terminal.N_{CR_H}It indicates for the cell into high mobility The maximum times of gravity treatment.N_{CR_M}Indicate the maximum times for the cell reselection into medium mobility.T_CRmaxHystIt specifies at end End can enter interval additional time before general mobility status.

Terminal in RRC_IDLE states executes cell reselection when meeting cell re-selection conditions.When terminal executes cell Gravity treatment reaches T_CRmaxNumber be more than N as first threshold_{CR_H}When, as the mobility status of terminal, meet high mobility shape The condition of state.T is reached when terminal executes cell reselection_CRmaxNumber be more than N as second threshold_{CR_M}And no more than as the The N of one threshold value_{CR_H}When, as the mobility status of terminal, meet the condition of medium mobility state.When in terminal execution cell Gravity treatment reaches T_CRmaxWhen number be no more than N as second threshold_{CR_M}When, as the mobility status of terminal, meet normal move The condition of dynamic character state.For example, when in interval T additional time_CRmaxHystPeriod do not sense terminal be in high-mobility state and When normal mobility state, it can estimate that terminal is in normal mobility state.However, when terminal two identical cells it Between when being consecutively carried out cell reselection, which may not be counted as to cell reselection number.

Zoom factor can be specified according to the mobility status of terminal depending on MSE and can be to one or more Cell reselection parameters apply the zoom factor.For example, can be to Qhyst, Treselection_EUTRA、Treselection_UTRA、 Treselection_GERA、Treselection_{CDMA_HRPD}And Treselection_{CDMA_1xRTT}Using according to medium mobility and height Sf-Medium and sf-High of the mobility as zoom factor.

In addition, cell reselection information can disappear being included in for the RRC disconnected of the RRC between network and terminal The RRC of breath is provided to terminal while disconnection in message.For example, RRC disconnects the subcarrier frequency that message may include E-UTRAN The son of rate list and the sub-carrier frequencies list and cell reselection priority, UTRA-TDD of cell reselection priority, UTRA-FDD Carrier frequency list and cell reselection priority, the sub-carrier frequencies list of GERAN and cell reselection priority, The band class list of CMDA2000HRPD and the band class list of cell reselection priority and CDMA20001xRTT and cell weight Select priority.

Hereinafter, description is shared into RAN by multiple operators.

Multiple operators can provide service by individually building RAN, but by shared by particular operator structure The cell built provides services to subscriber.It is shared that this is referred to as RAN.In this case, it is shared by multiple providers small Area can broadcast PLMN lists.PLMN lists can while being included in by the SIB1 of the system information of Cell Broadcast CB quilt It sends.Furthermore, it is possible to realize the PLMN identifiers enumerated first in the PLMN lists being included in SIB1 to indicate main PLMN (Primary PLMN)。

In the case of a cell is shared by multiple operators, the cell reselection information by being shared cell offer can be with All PLMN being jointly used in PLMN lists.In general, being constructed by the cell reselection information for being shared cell offer At main consistent with the strategy of main PLMN.Therefore, the terminal that service is received dependent on auxiliary PLMN is based on removing to provide service And the information other than the cell reselection information optimized executes cell reselection.

Hereinafter, the switching related with the movement of terminal of RRC connection status is in by description.

Fig. 7 is the flow chart for instantiating handoff procedure.

Terminal (UE) sends measurement report (Measurement Report) (S710) to source base station (Source BS).Source Base station determines whether to execute switching by using received measurement report.When source base station judgement is switched to continuous cell When, continuous cell becomes Target cell (Target Cell) and belongs to the base station of the Target cell as target BS (Target BS)。

Source base station sends switching to target BS and prepares (Handover Preparation) message (S711).Target BS Admission control (Admission Control) is executed to increase the successful possibility of switching.

Target BS sends switching to source base station and prepares affirmative acknowledgement (Acknowledgement, ACK) message.Switching is accurate Standby affirmative acknowledgement (ACK) message may include cell-radio network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI) and/or special (dedicated) random access lead code (preamble).C- RNTI is the identifier for identifying the terminal in cell.Executing the random access based on contention-free (non-contention) When used the special random access preamble code of the lead code that can be exclusively used during predetermined period as terminal.It can Random access procedure to be divided into random access procedure and the use using pre-determined random access lead code based on contention Special random access preamble code based on contention-free random access procedure.It is based on compared with the random access procedure based on contention Contention-free random access procedure can prevent from switching to postpone caused by with the contention of other terminals.

Source base station sends switching command (Handover Command) message (S713) to terminal.It can be with radio resource control System (Radio Resource Control, RRC) connection reconfigures (RRC Connection Reconfiguration) and disappears The form of breath sends switching command message.Switching command message may include the C-RNTI received from target BS and it is special with Machine access lead code.

Terminal receives switching command message and hereafter synchronous with target BS (synchronization) from source base station (S714).Terminal receives the PSS and SSS of target BS so that PSS is synchronous with SSS and receive PBCH to obtain system information.

Terminal sends random access lead code to start random access procedure (S715) to target BS.Terminal can use The special random access preamble code being included in switching command message.Alternatively, if unallocated special random access preamble code, Then terminal can use the pre-determined random access lead code selected in random access preamble set.

Target BS sends accidental access response message (S716) to terminal.Accidental access response message may include uplink Link circuit resource distributes and/or time migration (timing advance, timing advance).

The terminal of accidental access response message is received based on time migration to adjust uplink synchronisation and by making Confirm (Handover Confirm) message (S717) with uplink resource allocation to send switching to target BS.Switching is true Recognizing message can indicate that handoff procedure is completed and together with uplink buffer status reporting (Buffer Status Report) It sends together.

Target BS switches to mobility management entity (Mobility Management Entity, MME) transmitting path Ask (Path Switch Request) message.

MME sends user plane update request (User Plane to gateway (Serving-Gateway, S-GW) Update Request) message (S719).

Downlink data path switching (Switch) is arrived target BS (S720) by S-GW.

S-GW sends user plane update response (User Plane Update Response) message (S721) to MME.

MME is to target BS transmitting path switching request ACK (Path Switch Request ACK) message (S722).

Target BS sends resource release (Resource Release) message to notify the success of switching to source base station (S723)。

Source base station discharges resource (S724) related with terminal.

Hereinafter, description Radio Link is monitored into (Radio Link Monitoring, RLM).

UE monitors downlink based on cell-specific reference signal (cell-specific reference signal) Quality is to detect the Downlink Radio Link quality of PCell.UE estimates for monitoring under Downlink Radio Link quality Downlink Radio Link quality and estimated quality is compared with threshold value Qout and threshold value Qin.Threshold value Qout is determined Justice receives the level of Downlink Radio Link for potentially unstable, and corresponds to the pass the vacation for considering PDFICI errors Think that PDCCH sends the 10% block error rate of (hypothetical PDCCH transmission).Threshold value Qin is defined as The Downlink Radio Link quality level that more stably receives of level that can be than Qout and correspond to the pass consideration The 2% block error rate that the imaginary PDCCH of PCFICH errors is sent.

Hereinafter, by description radio jink failure (Radio Link Failure, RLF).

UE is consecutively carried out measurement to maintain and receive the quality of the Radio Link of the serving cell of service.UE determines communication Whether in the present case can not possibly due to the deterioration (deterioration) of the quality of Radio Link.When communication is due to clothes Be engaged in cell low quality and it is hardly possible when, present case is determined as radio jink failure by UE.

When radio jink failure is determined, UE abandon the communication with current service cell maintenance, by cell selection (or Cell reselection) process is RRC connection reconstructions (the RRC connection that select new cell, and attempt to the new cell re-establishment)。

In the specification of 3GPP LTE, the impossible situation of normal communication has been exemplified below：

- UE is determined based on the wireless quality measurement result of PHY layer to be existed sternly in terms of downlink communication link quality The case where weight problem (determining that the quality of PCell is low during RLM).

When random access (random access) process continuously fails in media access control sublayer, UE is determined in uplink Situation of problems in transmission.

When uplink data, which is sent in rlc sublayer, continuously to fail, UE is determined exists in uplink transmission The case where problem.

- UE determines the case where handover failure.

The case where message received by UE is not by completeness check (integrity check).

Hereinafter, RRC connection reconstructions (RRC connection re-establishment) mistake will be described in further detail Journey.

Fig. 8 is the figure for instantiating RRC connection reestablishment procedures.

With reference to Fig. 8, UE stop in addition to Signaling Radio Bearer #0 (Signaling Radio Bearer#0, SRB 0) by Setting all radio bearers (radio bearer) use and initialize each of access layer (Access Stratum, AS) A sublayer (S810).In addition, each sublayer and PHY layer are set to default configuration (default configuration).UE exists RRC connection status is maintained during such process.

UE executes the cell selection procedure (S820) for executing RRC connection reconfiguration procedure.Even if can be tieed up with UE It holds the cell selection procedure that RRC connection status also executes under the RRC idle states of UE and executes RRC connections in the same manner and reconfigure Cell selection procedure in the process.

UE verifies the system information of respective cell to determine whether respective cell is suitable after executing cell selection procedure Close cell (S830).When the E-UTRAN cells that selected cell is suitable are determined, UE sends RRC to respective cell and connects Connect reconstruction request message (RRC connection reestablishment request message) (S840).

In addition, being by the selected cell of cell selection procedure for executing RRC connection reestablishment procedures when determining Using the RAT in addition to E-UTRAN cell when, UE stop RRC connection reestablishment procedures and enter RRC idle states (S850)。

UE, which may be implemented, makes cell by receiving the cell selection procedure of the system information of selected cell and being suitble to Property verification completed in finite time.For this purpose, UE can be according to the startup of RRC connection reestablishment procedures come driving timing device.When true Timer can stop when having determined UE selection suitable cells.When the timer ends, UE can consider that RRC connection reestablishment procedures are lost It loses and enters RRC idle states.Timer is hereinafter referred to as radio jink failure timer.In LTE specification TS In 36.331, the timer referred to as T311 is used as radio jink failure timer.UE can be from serving cell The setting value of timer is obtained in information of uniting.

In the case where receiving and receiving the RRC connection reestablishment request message from UE, cell sends RRC connections to UE Rebuild message (RRC connection reestablishment message).

The UE that RRC connection reconstruction message is received from cell reconfigures PDCP sublayers and rlc sublayer for SRB1.This Outside, UE is calculated various key values related with security setting and is reconfigured using the security key value recalculated It is responsible for the PDCP sublayers of safety.As a result, the SRB 1 between UE and cell is opened, and RRC control messages can be sent And reception.UE completes the restarting of SRB1, and the RRC connection reconstructions completed to cell transmission RRC connection reestablishment procedures are complete At message (RRC connection reestablishment complete message) (S860).

On the contrary, in the case where receiving and refusing the RRC connection reestablishment request message from UE, cell is sent to UE RRC connection reconstructions refuse information (RRC connection reestablishment reject message).

When successfully performing RRC connection reestablishment procedures, cell and UE execute RRC connection reestablishment procedures.As a result, UE exists Restore state before executing RRC connection reestablishment procedures and maximally ensures the continuity of service.

Hereinafter, the interaction between the access net by description based on 3GPP and another access net (interworking)。

In 3 gpp, it has standardized for being introduced and non-3 GPP access network (for example, WLAN) interaction from version 8 Find and select simultaneously the access network discovery and selection function (Access Network Discovery of come-at-able access net And Selection Function, ANDSF).ANDSF can transmit the access network discovery letter that can be accessed at the position of terminal Breath (for example, WLAN, WiMAX location information etc.), the tactful inter-system mobility strategy (Inter- for reflecting provider System Mobility Policies, ISMP) between system routing policy (Inter-System Routing Policy, ISRP), and terminal can based on IP service flow that described information determination to be sent and will by access net.ISMP can be wrapped Include the network selection rule that related terminal selects the access net connection (for example, WLAN or 3GPP) of an activation (active). ISRP may include related terminal select the access net of one or more potential activation connect (for example, WLAN or 3GPP this two Person) network selection rule.Routing policy includes multiple access PDN connectivities (Multiple Access PDN between system Connectivity, MAPCON), IP flow mobilities (IP Flow Mobility, IFOM) and non-seamless WLAN shunt (non- seamless WLAN offloaing).Open Mobile Alliance device management (Open Mobile Alliance Device ) etc. Management the dynamic supply (dynamic provision) being used between ANDSF and terminal.

MAPCON is to make configuration and maintenance multiple PDN connectivities simultaneously by accessing net and non-3 GPP access network via 3GPP It (multiple PDN connectivity) and makes it possible to realize the PDN connections that seamless service stream entirely activates to shunting (active PDN connection) unit seamless Business Stream shunts the technology of (seamless traffic offloading) It standardizes to configure.For this purpose, ANDSF servers provide the information about the access point name (APN) that will execute shunting, access Time (moment (the Time of that priority (routing rule (routing rule)) between net, shunt method are applied to Day the information (validity region))) and about the access to be shunted netted.

IFOM supports and IP flow mobility of subdivision more more flexible than MAPCON and seamless shunting ((seamless offloading).The technical characteristic of IFOM enables the terminal to connect even if by using identical access point name (APN) To also by different access net accessing group data nets and mobility and dividing cell being enable to move when Packet Data Network Move is not Packet Data Network (PDN) but special services IP service flow stream unit is to obtain the flexibility in service provider face. For this purpose, ANDSF servers provide the priority (routing rule between the information about the IP streams that will execute shunting, access net (routing rule)), time (moment (Time of Day)) for being applied to of shunt method and about the access net to be shunted Information (validity region (Validity Area)).

The path for making a reservation for specific IP service flow is not changed into WLAN but shunts industry completely by the expression of non-seamless WLAN shunt Business stream is not to pass through the technology of EPC.Because this is not anchored (anchoring) to P-GW to support mobility, through shunting IP service flow again for 3GPP access net for can not be seamless.For this purpose, ANDSF servers are provided the terminal with and are carried For executing information as the info class of IFOM.

With reference to Fig. 9, net is accessed as 3GPP, the cell 1 centered on base station 1 910 is extended and is with base station 2 920 The cell 2 at center.In addition, as WLAN access net, extend be located in cell 1 access point (Access Point, AP) basic service set (Basic Service Set, BBS) the 1 and BSS2 centered on AP2 940 centered on 1 930 and Extend the BSS3 centered on being present in the AP3 950 in cell 2.The coverage area of cell is illustrated by solid line, and BSS Coverage area is illustrated by dotted line.

Assume that terminal 900 is configured to access net by 3GPP and WLAN access nets execute communication.In this case, Terminal 900 can be referred to as station (station).

Initially, terminal 900 is established with BS1 910 in cell 1 and is connected to access net execution business stream process by 3GPP.

Terminal 900 can enter the coverage area of BSS1 when being moved in the coverage area in cell 1 and pass through scanning It was found that BSS1.In this case, terminal 900 can by execute with being associated with of the AP1 930 of BSS1 (association) and Authenticate (authentication) process and with WLAN access net connection.As a result, terminal 900 can by 3GPP access net and WLAN access nets carry out processing service flow.In addition, when terminal 900 moves the coverage area to deviate BSS1, net is accessed with WLAN Connection can terminate.

Terminal 900 is continuously moved in the coverage area of cell 1 to shift to the attached of the boundary between cell 1 and cell 2 Coverage area that is close and entering BSS2 is to pass through scanning discovery BSS2.In this case, terminal 900 can by execute with Association and the authentication process of the AP2 940 of BSS2 and with WLAN access net connection.In addition, because in the coverage area of BSS2 Terminal 900 is positioned on the boundary of cell 1 and cell 2, so may not be fabulous by the service quality of 3GPP access nets 's.In this case, terminal 900 is operable to access net intensively processing service flow by WLAN.

When terminal 900 moves the coverage area to deviate BSS2 and enters the center of cell 2, terminal 900 can be whole Only net is accessed come processing service flow with the connection of WLAN access nets and based on cell 2 by 3GPP.

Terminal 900 can enter the coverage area of BSS3 when being moved in the coverage area in cell 2 and pass through scanning It was found that BSS1.In this case, terminal 900 can by execute with the AP3 950 of BSS3 be associated with and by authentication process with WLAN access net connections.As a result, terminal 900 can access net by 3GPP and WLAN accesses net come processing service flow.

As described in the example of Fig. 9, under the wireless communications environment that 3GPP accesses that net and non-3 GPP access network coexist, eventually End can access net and/or non-3 GPP access network adaptively processing service flow by 3GPP.

Even if when provider or terminal are not supported as accessing phase interaction between net and non-3 GPP access network in 3GPP When the ANDSF of one scheme, it is also desirable to will correspond to distribution of traffic flows to another according to the Business Stream situation of 3GPP access nets Access net.For necessity, need to propose the effective interaction scheme using the non-3 GPP access network for not supporting ANDSF.

Furthermore, it is possible to occur because not considering to use caused by the characteristic for the wireless channel that wherein ANDSF dynamically changes Family Quality of experience deterioration.User experience quality deteriorates in order to prevent, needs the access for the characteristic for proposing that base station considers wireless channel Interaction scheme between net.

When base station is supported to access the interaction between net, do not carried to terminal compared with base station with ANDSF servers For information related with the routing of given traffic streams of APN, IP stream etc..Therefore, when terminal is between supporting access net When shunting Business Stream in the environment of interaction, terminal can route and handle all Business Streams of non-3 GPP access network.This Selectively routing given traffic streams by non-3 GPP access network to meet the requirement that processing it is expected by provider.In addition, will own Business Stream be routed to the problem of non-3 GPP access network may cause to cause overload in non-3 GPP access network.

Therefore, the present invention proposes the base station that selectively can be route and handle and provides the terminal with Business Stream routing iinformation And terminal carrys out the processing method for service stream of processing service flow by using the Business Stream routing iinformation provided.Hereinafter, When describing processing method for service stream according to the embodiment of the present invention, it is WLAN that will describe non-3 GPP access network as example Access net.However, the scope of the present invention is not limited thereto, and it can even be applied to terminal associated with other access nets The execution of business stream process.

Referring to Fig.1 0, terminal receives WLAN information on services (S1010).Net can be accessed from 3GPP sends WLAN service letters Breath.

Broadcast signaling can be crossed from 3GPP accesses Netcom provide the terminal with WLAN information on services.For example, 3GPP access nets can Include the system information of WLAN information on services with broadcast.

Dedicated signaling can be crossed from 3GPP accesses Netcom provide the terminal with WLAN information on services.For example, 3GPP access nets can To send the RRC information for including WLAN information on services to terminal.

WLAN information on services can be be allowed to processing 3GPP access online Business Stream WLAN access net it is associated Information.It finds WLAN access network entities that is, WLAN information on services can be used for terminal and determines corresponding Whether WLAN access network entities can handle 3GPP and access online Business Stream.It can be included in detailed in WLAN information on services Thin information may be as follows.

1) WLAN information on services may include the mark for being allowed to the WLAN access nets that processing 3GPP accesses online Business Stream Know symbol list.The identifier being included in identifier list may be as follows.

- WLAN SSID (service set identifier (Service Set Identifier))：It can be repeated in multiple BSS Ground uses SSID.

- WLAN BSSID (basic service set identifier (Basic Service Set Identifier))：It can be usual It will be set as the MAC Address of corresponding A P as the BSSID of the information for identifying the BSS managed by specific APP.

- HESSID (isomorphism extended service set identifier (Homogeneous Extended Service Set Identifier))：It can be set in the form of MAC Address as value identical with a BSSID in AP and be transported by hot spot Seek the HESSID for the identifier that quotient (hotspot operator) sets.All AP in hot spot networks can set identical HESSID values.

Domain name list (domain name list)：Domain name list may include one including WLAN access network entities Or more domain name.

2) WLAN information on services may include as be allowed to processing 3GPP access online Business Stream WLAN access net Condition at least one threshold value.The threshold value that can be included in WLAN information on services may be as follows.

The signal quality threshold of-WLAN access nets

The load threshold value of-WLAN access nets

Terminal can determine reception and find whether the WLAN access network entities of WLAN information on services can handle 3GPP and connect Enter online Business Stream.

Terminal receives Business Stream routing iinformation (traffic routing information) (S1020).The business flow path Can access net from 3GPP to send by information.

Broadcast signaling can be crossed from 3GPP accesses Netcom provide the terminal with Business Stream routing iinformation.For example, 3GPP accesses net The system information for including Business Stream routing iinformation can be broadcasted.

Dedicated signaling can be crossed from 3GPP accesses Netcom provide the terminal with Business Stream routing iinformation.For example, 3GPP accesses net It can include the RRC information of Business Stream routing iinformation to terminal transmission.

Business Stream routing iinformation may be implemented as being used to distinguishing to WLAN access nets can be route and The information for the Business Stream that the Business Stream of processing and the possibility netted to WLAN accesses are not route and handled.When terminal determines whether Routing 3GPP accesses online Business Stream and accesses net by WLAN come when handling corresponding Business Stream, terminal can pass through WLAN Access net is determined as being allowed to the Business Stream of routing by Business Stream routing iinformation to handle.

Business Stream routing iinformation may include to can by be routed to WLAN access net by processed Business Stream it is related The list of the radio bearer of connection.Radio bearer may include the carrying ID of corresponding radio bearer.

Business Stream routing iinformation may include being routed to WLAN access nets and handling (that is, only passing through with not being allowed through 3GPP accesses net and handles) Business Stream associated radio bearer list.Radio bearer list may include corresponding The carrying ID of radio bearer.

Business Stream routing iinformation, which may include instruction, to access net by being routed to WLAN come the information of processing service flow.

Terminal can execute whether the WLAN access network entities that WLAN has found and found are allowed to processing 3GPP accesses Online Business Stream (S1030).Terminal only can execute WLAN when terminal receives WLAN information on services and find.Namely It says, when terminal can drive the WLAN module found for WLAN to start WLAN discoveries when receiving WLAN information on services.

Terminal can utilize WLAN service letters when determining whether WLAN is allowed to the WLAN of processing service flow to access net Breath.For example, when the BSSID of the BSS found is included in the BSSID lists being included in WLAN information on services, terminal can Allow 3GPP business stream process in corresponding BSS with judgement.As another example, terminal can depend on being included in WLAN services Whether the radio signal quality and/or load situation of threshold value in information and BSS that determination is found meet condition and full Judgement allows 3GPP business stream process in corresponding BSS when sufficient condition.When the wireless signal of the BSS found is than signal quality threshold When the duty ratio load threshold value of value height and/or BSS are low, it is possible to determine that meet condition.Terminal can be by considering in two conditions Only one or two conditions come determine WLAN whether be allowed to processing service flow WLAN access net.

When the WLAN access network entities found are allowed to processing 3GPP Business Streams, terminal may be close to corresponding WLAN accesses net.Herein, can be the authentication/association process executed with the AP of BSS close to WLAN access nets.

When determined found WLAN access network entities be not allowed to processing 3GPP Business Streams when, terminal can pass through 3GPP accesses net to handle all 3GPP Business Streams (S1060).

Terminal can determine whether Business Stream to be processed can access net by WLAN and handle (S1040).Terminal can be with Determining whether Business Stream is allowed to the when of accessing the Business Stream of net processing by WLAN to utilize Business Stream routing iinformation.

Terminal can route and handle WLAN access net be designated as accessing by WLAN by Business Stream routing iinformation Net the Business Stream (S1050) of processing.

Terminal can route and handle 3GPP access net be designated as not being allowed through by Business Stream routing iinformation The Business Stream (S1060) of WLAN access net processing.

In the case where Business Stream routing iinformation includes radio bearer list, when associated with currently processed Business Stream is wanted Radio bearer ID when being included in radio bearer list, terminal can be determined that can access the corresponding industry of net processing by WLAN Business stream.On the contrary, when radio bearer ID is not included in radio bearer list, it is possible to determine that corresponding Business Stream is not allowed to lead to Cross WLAN access net processing.

In addition, when not or else being allowed to processing 3GPP Business Streams by the close WLAN access network entities of terminal, terminal can To stop handling 3GPP Business Streams by WLAN access nets and handle all Business Streams by 3GPP access nets.

In the processing method for service stream illustrated by Figure 10, instantiates and receive business after receiving WLAN information on services Routing iinformation is flowed, but the invention is not restricted to this.Terminal can receive Business Stream routing iinformation together with WLAN information on services. Terminal can be found that the wherein available WLAN access nets of 3GPP Business Streams and is followed by close to found WLAN access nets Receive Business Stream routing iinformation.

Referring to Fig.1 1, it is assumed that terminal supports the communication based on LTE and both the communication based on WLAN, and assumes LTE communication and WLAN communications can independently be executed.Assume that terminal resides in the cell 1 based on LTE and/or terminal passes through It establishes and is connected to receive service with cell 1.It assumes and extends BSS1 in the coverage area of cell 1.

Terminal receives WLAN information on services (S1110) from cell 1.WLAN information on services can be included in by cell 1 It is sent in the case of in the system information of broadcast.WLAN information on services can be included in feelings in the RRC information from cell 1 It is sent under condition.

WLAN information on services may include the WLAN access network entity lists for being allowed to processing 3GPP Business Streams.As The list of BSSID lists may include at least one BSSID.In the example it is assumed that BSSID lists include BSS1's ID。

Terminal receives Business Stream routing iinformation (S1120) from cell 1.Business Stream routing iinformation can be included in by small It is sent in the case of in the system information that area 1 broadcasts.Business Stream routing iinformation can disappear being included in the RRC from cell 1 It is sent in the case of in breath.

Business Stream routing iinformation may include and can wirelessly be held by the way that the Business Stream of WLAN access net processing is associated List table.Can include wirelessly holding associated with the Business Stream that can be handled by WLAN access nets by radio bearer list In the carrying ID of load.

As illustrated in Figure 11, WLAN information on services and Business Stream routing iinformation are provided to end by individual signaling End, but according to the embodiment, two kinds of information can be provided simultaneously to terminal by single signaling.

Terminal executes scanning to find that WLAN accesses net (S1130).It can be only when terminal receives WLAN information on services The discovery of terminal is crossed by triggering WLAN accesses Netcom.When terminal receives WLAN information on services, terminal can drive for WLAN The WLAN module of communication.

Terminal can execute drive sweep to find WLAN.By drive sweep, terminal reception is sent from the AP of BSS1 Beacon frame is to find BSS1.The BSSID of BSS1 and system information for being operated in BSS1 can be included in beacon frame In.

Terminal determines whether BSS1 is allowed to the WLAN of processing 3GPP Business Streams to access net based on WLAN information on services (S1140).Because the BSSID of BSS1 is included in the BSSID lists being included in WLAN information on services, terminal can be with Judgement BSS1 is allowed to the WLAN access nets of processing 3GPP Business Streams.

Although not illustrating, in addition terminal compares the signal quality and/or load level and WLAN information on services of BSS1 Threshold value with judge BSS1 whether be allowed to processing 3GPP Business Streams.When related to the wireless environment for handling 3GPP Business Streams When the threshold value of connection is also included in WLAN information on services or when be provided previously in the terminal/set threshold value when can execute it is attached Add determination.It can be by the BSS information on load member of the beacon frame of the BSS1 received via scanning usually by the load water of BSS1 It is flat to be supplied to terminal.For example, because the load threshold value of the load level ratio WLAN information on services of BSS1 is high, terminal can be sentenced It is the WLAN access nets for not being allowed to processing 3GPP Business Streams to determine BSS1.

Terminal executes association/authentication process and communicates (S1150) to execute WLAN in BSS1.Terminal is sent to the AP of BSS1 With from the AP of BSS1 receive authentication frame and exchange correlation claim frame and association response frame to execute authentication and association process.

Terminal is by the AP of cell 1 and BSS1 come processing service flow (S1160).Terminal can pass through Business Stream routing iinformation The Business Stream for being allowed through WLAN access net processing is handled via AP.For example, terminal can will in radio bearer list Carrying ID the associated Business Stream of radio bearer be routed to WLAN access net with by the Frame switch with AP to handle road By Business Stream.On the contrary, net can be accessed by 3GPP to handle and be not included the wireless of the carrying ID in radio bearer Carry associated Business Stream.

It is automatic when finding that the WLAN for being allowed to processing 3GPP Business Streams accesses net that the example of Figure 11 instantiates wherein terminal Ground accesses net come the embodiment of processing service flow by 3GPP/WLAN.In the example of fig. 11, because being provided previously to terminal Business Stream routing iinformation, so terminal can automatically be opened when finding that the WLAN that be allowed to processing 3GPP Business Streams accesses net Dynamic business stream process.

It is different from the example of Figure 11, it can be in response to determining the available terminal of business stream process netted by WLAN accesses It asks and is supplied to terminal to by Business Stream routing iinformation.Such example will be described together together with Figure 12.

Referring to Fig.1 2, it is assumed that terminal supports the communication based on LTE and both the communication based on WLAN, and assumes LTE communication and WLAN communications can independently be executed.Assume that terminal resides in the cell 1 based on LTE and/or terminal passes through It establishes and is connected to receive service with cell 1.It assumes and extends BSS1 in the coverage area of cell 1.

Terminal receives WLAN information on services (S1210) from cell 1.WLAN information on services can be included in by cell 1 It is sent in the case of in the system information of broadcast.WLAN information on services can be included in feelings in the RRC information from cell 1 It is sent under condition.

Terminal executes scanning to find that WLAN accesses net (S1220).It can be only when terminal receives WLAN information on services The discovery of terminal is crossed by triggering WLAN accesses Netcom.When terminal receives WLAN information on services, terminal can drive for WLAN The WLAN module of communication.

Terminal can execute active scan to find WLAN.Terminal can broadcast the probe request for active scan (S1221).The AP for receiving the BSS1 of probe request sends probing response frame as the response (S1222) to it to terminal. By probing response frame, terminal can be found that BSS1.The BSSID of BSS1 and in BSS1 operate WLAN system information It can be included in probing response frame.

Terminal determines whether BSS1 is allowed to the WLAN of processing 3GPP Business Streams to access net based on WLAN information on services (S1230).Because the BSSID of BSS1 is included in the BSSID lists being included in WLAN information on services, terminal can be with Judgement BSS1 is allowed to the WLAN access nets of processing 3GPP Business Streams.

Although not illustrating, in addition terminal compares the signal quality and/or load level and WLAN information on services of BSS1 Threshold value with judge BSS1 whether be allowed to processing 3GPP Business Streams.When related to the wireless environment for handling 3GPP Business Streams When the threshold value of connection is also included in WLAN information on services or when be provided previously in the terminal/set threshold value when can execute it is attached Add determination.It can be by the BSS information on load element of the beacon frame of BSS1 received via scanning by the load level of BSS1 It is supplied to terminal.For example, because the load threshold value of the load level ratio WLAN information on services of BSS1 is high, terminal can be determined that BSS1 is the WLAN access nets for not being allowed to processing 3GPP Business Streams.

Business Stream of the terminal request that Business Stream to route and handling WLAN access nets is prepared to 3GPP access nets Routing iinformation (S1240).For this purpose, terminal sends Business Stream routing iinformation to cell 1.Business Stream routing information request can indicate Terminal can be to be prepared by the business stream process of WLAN access nets.

3GPP accesses net from terminal reception Business Stream routing information request and using the Business Stream routing iinformation as to it Response be sent to terminal (S1250).In this case, it is possible to not include in the system information broadcasted by Business Stream information In.Business Stream routing iinformation can be sent from the RRC information that cell 1 is sent by dedicated signaling in the case that being included in To terminal.

Terminal executes association/authentication process and communicates (S1260) to execute WLAN in BSS1.Terminal is sent to the AP of BSS1 With from the AP of BSS1 receive authentication frame and exchange correlation claim frame and association response frame to execute authentication and association process.

Business Stream can be immediately treated by the AP of cell 1 and/or BSS1 by receiving the terminal of Business Stream routing iinformation (S1270).Terminal can handle the business for being allowed through WLAN access net processing by Business Stream routing iinformation via AP Stream.For example, Business Stream associated with the carrying radio bearer of ID in radio bearer list can be routed to WLAN by terminal Net is accessed to handle route Business Stream by the Frame switch with AP.On the contrary, can by 3GPP access net come handle with It is not included the associated Business Stream of radio bearer of the carrying ID in radio bearer.

In processing method for service stream according to the embodiment of the present invention, base station is capable of providing the industry of such as radio bearer Routing iinformation is flowed in business and terminal can be based on the Business Stream routing iinformation selectively processing service flow.ANDSF works are not installed The provider of interaction scheme between existing 3GPP access nets and non-3 GPP access network does not support the terminal of ANDSF also Each Business Stream can be directed to, net or non-3 GPP access network selectively processing service flow are accessed by 3GPP.Need higher QoS The Business Stream of terminal net accessed by 3GPP handle, the Business Stream without higher QoS connects by being routed to non-3 gpp It networks and enables to ensure the QoS of user and efficiently control the load of 3GPP access nets to handle.

Figure 13 is the block diagram for instantiating the wireless device that embodiments of the present invention wherein may be implemented.The equipment can be real Terminal in the embodiment of existing Figure 10 to Figure 12 and/or network (base station or another network entity).

Referring to Fig.1 3, wireless device 1300 includes processor 1310, memory 1320 and radio frequency (RF) unit (radio frequency unit)1330。

Processor 1310 realizes function, process and/or the method being suggested.Processor 1310 is configured to receive about non- The information on services and Business Stream routing iinformation according to the embodiment of the present invention of 3GPP access nets.Processor 1310 is constructed 3GPP industry is handled at whether determining found non-3 GPP access network entity is allowed through non-3 GPP access network information on services Business stream.Processor 1310 is configured to handle 3GPP business by 3GPP/ non-3 GPP access networks based on Business Stream routing iinformation Stream.Processor 1310 can be configured to execute referring to Fig.1 0 to embodiments of the present invention described in Figure 12.

RF units 1330 are connect with processor 1310 to send and receive wireless signal.RF units 1330 may include being used for One or more RF units of access Network Communication based on 3GPP and the access Network Communication based on non-3 gpp.

Processor may include application-specific integrated circuit (application-specific integrated circuit, ASIC), different chipsets, logic circuit and/or data processing equipment.In fig. 13,1310 quilt of single processor is instantiated It is configured to control and manage all RF units for each access Network Communication, but wireless device according to the present invention is not limited to This.Corresponding RF units for each access Network Communication may be with the embodiment that corresponding processor functionally couples can ?.

Memory 1320 may include read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), flash memory, memory card, storage medium and/or other storage devices.RF is mono- Member 1330 may include the baseband circuit for handling wireless signal.When embodiment is by software realization, aforementioned techniques can be with Module (process, function etc.) by executing aforementioned function is realized.Module can be stored in memory 1320 and by handling Device 1310 executes.Memory 1320 can reside in inside or outside processor 1310 and by various known approaches and processing Device 1310 connects.

In exemplary system above-mentioned, has been based on and describe method as the flow chart of series of steps or block, but It is the sequence for the step that method is not limited to the present invention, and any step can be according to the step different from abovementioned steps or sequence In or sequence or simultaneously as abovementioned steps or sequence occur.In addition, it will be understood by those skilled in the art that flow chart institute The step of showing not exclusively and may include other steps or one or more steps do not influence the model of the present invention It encloses and can be deleted.

Claims

1. a kind of method for processing service flow, this method is held by terminal in the wireless communication system for supporting multi-access network Row, this approach includes the following steps：

WLAN WLAN information on services is received from the access net based on third generation partner program 3GPP；

Wherein, the WLAN information on services includes the list for the WLAN service set identifiers for being allowed to processing 3GPP Business Streams；

Determine whether the 3GPP Business Streams are allowed through at the access net based on WLAN based on the WLAN information on services Reason；

If it is determined that the 3GPP Business Streams are allowed through the access net processing based on WLAN, then send for asking State the Business Stream routing information request of Business Stream routing iinformation；

It is received from the access net based on 3GPP in response to described in the Business Stream routing information request by specific messages Business Stream routing iinformation,

Wherein, the Business Stream routing iinformation includes radio bearer list, and the radio bearer list includes can be by described WLAN access nets handle the carrying ID of the radio bearer of the 3GPP Business Streams；And

When the radio bearer ID associated with the 3GPP Business Streams is included in the radio bearer list, pass through The WLAN accesses net to handle the 3GPP Business Streams.

2. according to the method described in claim 1, wherein, when the radio bearer ID associated with the 3GPP Business Streams does not have When being included in the radio bearer list, net is not accessed by the WLAN to handle the 3GPP Business Streams.

3. according to the method described in claim 1, wherein：

Determine whether that the step of access net based on WLAN handles the 3GPP Business Streams includes the following steps：

It was found that the access net based on WLAN, and

When the identifier of the access net based on WLAN found is included in the service set identifier list, judgement is permitted Perhaps the described access net based on WLAN handles the 3GPP Business Streams.

4. according to the method described in claim 1, wherein, the WLAN information on services further includes signal quality threshold and load threshold Value.

5. according to the method described in claim 4, wherein：

It was found that the access net based on WLAN, and

When being found that it is in the service set identifier list and described that the identifier of the access net based on WLAN is included in Based on WLAN access net signal quality it is higher than the signal quality threshold and it is described based on WLAN access net load When lower than the load threshold value, determining allows the access net based on WLAN to handle the 3GPP Business Streams.

6. a kind of wireless device operated in a wireless communication system, the wireless device include：

First RF units, the first RF units are configured as sending and receiving third generation partner program 3GPP networks letter Number；

2nd RF units, the 2nd RF units are configured as sending and receiving WLAN wlan network signal；And

Processor, the processor are configured as operating in combination with the first RF units and the 2nd RF Elementary Functions,

Wherein, the processor is configured to：

WLAN information on services is received from the access net based on third generation partner program 3GPP；